Alan Wilson states that Ava was daughter of a Duke named Luitfried. I am assuming, based on James Oberacker, World Connect db=joberacker, that this Duke is Luitfried Duke of Tours & Count of Upper Alsace. Vernon Wilson, World Connect db=vewcaere, has somewhat the same pedigree, but he names Ava, her father Liutfried, and her grandfather Hugh "de Bourges", but places them at Tours.